I value special teams highly too, but it's a lot easier to learn your responsibilities for each of them than it is to learn enough of the offense or defense to be trusted. It's hard to make a huge impact early on offense or defense because there's so much to learn - but if we can't get freshman locked in on special teams responsibilities we have a serious coaching problem. Which may be why there has been some turnover. I just don't think freshman on special teams needs to mean they're less reliable, they are not that complicated.
Also wouldn't hate some starters going all Kenny Bell and insisting on playing special teams. He was one hell of a gunner. But anyway, RBs - I like the room a lot, just gotta see who steps up. Way more promising already with 3-5 guys who have the size/health to run the ball unlike just Mills last year.